- fix off-by-one error in summing up the days of months, it would have   added one month too much - fix double-minus (`-` * `-` = `+`) - add several missing `break`s in toString() and format() methods # detected by and fixed with Christan Lang
- fix off-by-one error in summing up the days of months, it would have
  added one month too much
- fix double-minus (`-` * `-` = `+`)
- add several missing `break`s in toString() and format() methods
# detected by and fixed with Christan Lang


git-svn-id: 526f3b90ad6d9b1dfe840af828070ca3d99521ac@5328 d2cacbed-c0f6-0310-851a-9dad52fc623a

johannes85/core